ML19256G264
| ML19256G264 | |
| Person / Time | |
|---|---|
| Site: | Trojan File:Portland General Electric icon.png |
| Issue date: | 12/13/1979 |
| From: | Engelken R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V) |
| To: | Goodwin C PORTLAND GENERAL ELECTRIC CO. |
| References | |
| NUDOCS 7912280623 | |
| Download: ML19256G264 (1) | |
Text
[>R RECug*'o UNITED STATES
!\\
t NUCLEAR REGULATORY COMMISSION
$ (-
- ,E lk REGION V ce '-
1990 N. CAllFORNI A BOULEVARD SUITE 202, WALNUT CREEK PLAZA WALNUT C9EE K, CALIFORNI A 94596 December 13, 1979 Docket tio. 50-344 Portland General Electric Company 121 S. W. Salmon Street Portland, Oregon 97204 Attention: Mr. Charles Goodwin, Jr.
Assistant Vice President Gentlemen:
This Information Notice is provided as an early notification of a possibly significant matter.
It is expected that recipients will review the information for possible applicability to their facilities.
tio specific action or response is requested at this time.
If further 11RC evaluations so indicate, an IE Circular or Bulletin will be issued to recommend or request specific licensee actions.
If you have questions regarding this matter, please contact the Director of the appropriate NRC Regional Office.
Sincerely, Mrsw
[L R. H. E gelken Director
Enclosure:
IE Information Notice fio. 79-31 cc w/ enclosure:
C. P. Yundt, PGE F. C. Gaidos, PGE 1650 071 O
7912280 b
e SSIf!S: 6870 Accession tio.:
UtlITED STATES 7910250507 flUCLEAR REGULATORY COMt11SSION
~
OFFICE OF INSPECTION AND EtlFORCEf1ENT WASHINGT0fl, D.C.
20555 December 13, 1979 IE Information Notice No. 79-31 USE OF It! CORRECT A"PLIFIED RESP 0fiSE SPECTRA (ARS) i Description of Circumstances:
Recently, the NRC was informed that, during a review of valve weights in conjunction with the as-built review for IE Bulletin 79-14 at North Anna Unit 1, it was discovered that incorrect amplified response spectra (ARS) had been used as input to the analyses of some piping on both units 1 and 2.
The reanalyses are being perfomed by Stone & Webster (S&W), the Architect Engineer for the Virginia Electric & Power Conpany's facilities.
Sinilarly, Public Service Company of New Hanpshire informed the NRC that the wrona ARS were used for the design of some containment supports at their Seabrook units. The Architect Engineer for these plants is United Engineers & Constructors (UE&C).
The NRC is currently cursuing this issue in detail with S&W and UE&C to detemine the extent of the problem and the generic implications for other facilities.
This Infomation Notice is provided as an early notification of a possible significanc matter.
It is expected that recipients will review the infoma-tion for possible applicability to their facilities.
Specific action has been requested by IE Bulletin 79-14. This bulletin requires that input to seismic analyses of piping, which includes the use of the correct ARS, be verified against the as-built condition of the plant. No specific actions are requested in response to this Information Notice.
If NRC evaluations so indicate, further licensee actions may be requested or required.
If you have any ques-tions regarding this matter, please contact the Director of the appropriate flRC Regional Office.
flo written response to this IE Infomation Notice is required.
Enclosure:
List of IE Information Notices Recently Issued IMO n77
r
. 'IE Information Notice No. 79-31 Enclosure December 13, 1979 RECEtiTLY ISSUED IE INFORf1ATION NOTICES Infonnation Subject Date Issued To Notice No.
Issued 79-30 Reportino of Defects and 12/6/79 All power reactor facilities Noncomoliances, 10 CFR holding OLs and cps and Part 21 vendors inspected by LCVIP e
79-29 Loss of fionSafety-Related 11/16/79 All power reactor facilities Reactor Coolant System holdina GLs or cps Instrumentation Curing Operation 79-28 Overloadina of Structural 11/16/79 All power reactor facilities Elements Due to Pipe Support with an OL or CP Lcads 79-27 Steam Generator Tube 11/16/79 All power reactor facilities Ruptures At Two PWR holding OLs and cps Facilities79-12A Attempted Damage To flew 11/9/79 All Fuel Facilities, Flel. Assemblies research reactors, and power reactors with an OL or CP 79-26 Breach of Containment 11/5/79 All power reactor facilities Intearity holdina OLs and cps 79-25 Reactor Trips At Turkey 10/1/79 All power facilities with Point Units 3 And 4 an OL or a CP 79-24 Overpressurization Of 10/1/79 All power reactor facilities Co"tainment Of A PWR Plant with a CP
' fter A l'ain Steam Line Sreak 79-23 Emerqency Diesel Generator 9/26/79 All power reactor Lube Oil Coolers facilities holding OLs and cps 79-22 Qualification of Control 9/14/79 All power reactor Systems facilities with operating licenses and construction permits.
79-21 Transportation and Comnercial 9/7/79 All power and research Burial of Radioactive fiaterial reactors with OLs 1650 073